Finding the Fourth Proportional to 78,807.60, 108,789.48 and 46,987.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,807.60 : 108,789.48 = 46,987.56 : x
2. Step 2: Convert to fraction form
   78,807.60/108,789.48 = 46,987.56/x
3. Step 3: Cross multiply
   78,807.60x = 108,789.48 × 46,987.56
4. Step 4: Simplify right side
   78,807.60x = 5,111,752,218.87
5. Step 5: Solve for x
   x = 5,111,752,218.87/78,807.60
6. Step 6: Final answer
   x = 64,863.70